Electrical time-recorder.



No; 652,753. Patented July 3, I900. I E. DAVIS.

ELECTRICAL TIME RECORDER;

(Application filed June 12, 1899.)

4 SheetsSheet I.

(No' Model.)

WITNESSES THE Mcnms Pzrzns co.. Pnu'mm'uon WASHINFION. u. c.

No. 652,753 Ptentedfluly 3, I900. g. DAVIS. ELECTRICAL TIME RECORDER.

(Applicafion filed June 12, 1899.)

4 Sheets-Sheet 2. a}

(No Model.)

WITNEEEEE- 1: minus PETER: co. pnoro-uma. wmmum-mm" m. 652,753. P tented July 3, I900.

E. DAVIS.

ELECTRICAL TIME RECORDER.

(Application filed Jgnq 12, 1899.) (No Model.) 4 Sheets8heet 3.

. m: wnms PEYEAS 0a.. Pfiq'raLmm. WASHINGTON. n. c.

No. 652,753. Patented July 3, I900.

E. DAVIS.

ELECTRIBAL TIME RECORDER.

(Application filed June 12, 1899.) (No Model.)

4 SheetsSheet 4.

QWQWC Tans no. momu'mq, WASMNGTON, u. c,

U TED, STATES PATENT OFFICE.

EDWARD DAVIS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO MEYER A. BERNHEIMER AND RALPH TV. GORDON, OF'NEW YORK, N. Y.

ELECTRICAL TIM E-RECORDER.

SPECIFICATION forming part of Letters Patent No. 652,753, dated July 3, 1900.

Application filed June 12,1899. Serial No. 720,163. (No model.)

To all whom it may concern:

Be it known that I, EDWARD DAVIS, of Boston, in the county of Suffolk and State of Massachusetts,have in vented certain new and useful Improvements in Electrical'Time-Recorders, of which the following is a specification.

This invention has for its object to provide an improved mechanism for printing on the tape of a recording instrument, such as the recorder of a police-signaling or other system, the time of receiving a message.

The invention consists in the novel features of construction and arrangement which I shall now proceed to describe and claim.

Of the accompanying drawings, Figure 1 represents a top plan view of a time-recording instrument constructed in accordance with my invention. Fig. 2 represents a reverse plan view thereof. Fig. 3 represents an elevation of one end of the mechanism with portions broken away. Fig. 4: represents a side elevation. Fig. 5 represents an elevation of the other end of the mechanism. Fig. 6 represents a section on line 6 6 of Fig. 4. Fig. 7 represents a section on line 7 7 of Fig. 4. Fig. 8 represents an end elevation showing a modification. Fig. 9 represents a view of the back of the clock, showing the mechanism carried thereby. Fig. 10 represents a section on line 10 10, Fig. 9. Fig. 11 represents a diagrammatic view of the circuits. Fig. 12 represents a detail horizontal section taken below the upper frame-plate and showing the retarding-escapement.

The same reference characters indicate the same parts in all the figures.

Referring to the drawings, a is a horizontal base, on the upper side of which, at one end, are secured standards a a, forming a framework in which is journaled a shaft 19, having a type-wheel c secured to it and a second type-wheel d, of equal diameter, mounted loosely on it alongside the type-wheel 0. Also affixed to the shaft 1) are a bevel gear-wheel b and a cam 5 Secured to the hub of the loosely-mounted type-wheel cl is a toothed 0r ratchet wheel d, engaged by a pawl (1 pivotally mounted on the upper end of an arm (1 A spring (1 secured to the arm (1 holds the pawl (Z in engagement with the toothed wheel cl, and a spring (Z attached to said arm and to the framework a, holds a stud (l on the arm yieldingly against the cam b Anadjustment is provided at (l for varying the position of the stud d on its arm (1 and another adjustment is provided at (Z for varying the tension of the spring (Z As the shaft 17, carrying the type-wheel c, is rotated the edge of the cam 12 operating against the stud d retracts the arm 61 and its pawl, thereby causing said pawl to engage one of the teeth of the wheel (1, and when the highest part of the cam has passed the stud d" the spring (1 returns the arm (Z and the pawl (Z propels the toothed wheel (1 ahead the distance of one tooth, thereby rotating theloosely-mount ed type-wheel d an equal amount.

The type-wheel d hasfigures cut on its periphery from 1 to 24, indicating the twenty-four hours of the day, and thetypewheel 0 has figures on its periphery indicating the minutes of the hour. A suitable number, as twenty, of divisions are provided on the type-wheel c. WVith twenty divisions the intervals marked by said wheel would be three minutes apart. When the minute type-wheel c has made a complete rotation, the hour type- Wheel cl is stepped ahead by the mechanism describeda distance of one of its divisions, the toothed wheel d having twenty-four teeth on its periphery.

6 represents a plunger mounted to reciprocate in a tubular socket e, affixed to the under sideof the base a, said plunger carrying at its upper end, above the base, an impression block or platen e An inking-ribbon f, having its ends wound on suitably-journaled rolls f f and passing around guide-rolls f f extends between the type-wheels c d and the platen-block 6 The tape T, which runs from or to the recording instrument or other apparatus, passes between the platen-blocl'r e and the inking-ribbonf, as seenin Figs. 5 and 6, and is adapted to receive an imprint from the type-wheels c (1 when the platenblock is elevated to press the tape and inkribbon against said type-wheels. Below the base a is mounted in a vertical positionan electromagnet g,whose armature g is secured to a pivotal arm 9 supporting the plunger 6.

ice

ingly projected upwardly against the type-- The rotation of the ink-ribbon rolls wheels. f can be effected manually by turning milled heads f f on the ends oftheir shafts, or it; can be performed automatically by the mechanism illustrated in Fig. 8, which shows ratchet-wheels f f on the shafts f of the ink-ribbon rollers and a pawl f attached to the upper end of a pivotal lever f oscillated} intermittently by means of pins f f attached to the spokes of the type-wheel c,said lever being retracted by means of a spring f and the pawl f having a double-hooked end adapted to engage the teeth on either of the ratchet-wheels f whereby the pawl rotates said ratchet-wheel step by stepand advances the tape in either direction. When the tape has been wound up on one roll and unwound from the other, the operation is reversed by throwing the pawl f into engagement with the opposite ratchet-wheel.

The bevel-gear b on the end of the typewheel shaft 1) is engaged by a bevel-pinion h, attached to the upper end of a shaft or arbor h. :Said arbor passes Vertically through the base aa-nd is journaled at its upper end therein, and at its lower end in .a plate a located below the base a and attached thereto by posts a a Attached to the arbor it, between the base a, and the plate a, is an escape-wheel 71 which forms partof a clock-train operated by aspring 72. At the lower end of the arbor h is secured a wheel 71, composed of insulating material and having a number of pins 77 7,1, placed in ,a circular series around its pcrip'hery.

h is a detent secured to the pivotal arma ture c" of a magnet t' and having two stops 2 3, adapted to come into engagement withthe' pins b from opposite sides of their path. Thestop 3 is located in advance of the stop 2 and is separated therefrom by a space wide enough to permit the passage of .a pin h Normally the escapement formed by the pinwheeliand the detent is positioned, as represented in Fig. 2, with the stop 2 in the path of the .pins h the force of the spring 713 in;

the clock-train holding one of the pins in en gagement with said stop, as represented. When the magnet 1' is energized by the passage of a current, it attracts its armature against the force-of a spring 1' and draws the stop ,3 into .the path of the pin.

wheel advances a slight distance to bring its, pin against said stop 3, and when the armature 2' is released by a break in the circuit of the magnet 2' the spring '5 brings the detent back into its normal position, the pin 71,5 es-- capes through the space between the stops 2 and 3, and the next succeeding pin comes The pininto engagement with the stop 2. In the arrangement shown the pin-wheel h has five pins 71 arranged at equal distances in a circle and the gear-wheels h and b are in the ratio of one to four, so that the escape of one pin 72 on the pin-wheel causes the rotation of the minute type-wheelc a distance equal to 011etwentieth of its circumference. The movement of the type-wheel and clock-train during the escape of the pin-wheel 72, is retarded by means of a retarder included in the clocktrain and consisting of a fly or vane 77;, having a pallet h on its arbor engaging the escape-wheel 712.

One terminal 01 of the winding of the magnetz'is connected with a binding-postj,mounted on an insulating-block on the base a. A second binding-post j, mounted on said block, is connected with an upwardly-projecting hollow con-tact post or socket m, mounted on the base. The other terminal 2' of the magnet is connected with a'second hollow contact post or socket m on the block. The sockets m m areadapted to receive two metallic studs or contactposts m an, attached to the back of a clock 0, whereby the clock is separately connected with said sockets. The stud on is electrically connected with the metal work of theclock 0, while the stud m is mountedon a plate 19 of insulating material secured to the back of the clock and is electrically connected with two brushes q q, whichembrace the hub of a metal pinion g. The teeth of said pinion mesh with the teeth of two mutilated gear-disks r-s, secured to van arbor r, journaled on the plate 1). Said arbor has a pinion 011 its lower end meshing with a pinion r secured to the center arbor r of .the clock 0, said arborcarrying the minutehand 1' of the clock. The gear 0" has every other tooth removed from its periphery, so

' that in revolving with the pinion q there will be a period-of contact between said gear and the pinion anda period of no-n-contact-, thus causing a series of makes and breaks in an electric circuit which includes the gear and pinion. The gear s is insulated from the gear rand is supplemental thereto, acting to rotate the pinion 1 when the teeth of the gear r are out of mesh with the teeth of said pinion. The gear 8 has every other tooth removed from its periphery, but is placed so that its teeth alternate with the teeth of the gear 0', the .two being therefore mechanically equivalent to a complete gear. The teeth of the gear r are twenty in number, so that in thecourse of one revolution of the geartwenty makes and twenty breaks are made in the electric circuit. The pinions r r are of equal size, so that the revolution of the gear r takes place in one hour when the clocko is running. By virtue of the described connection of the clock with the contact-posts-m m the gear 0" and pinion q are included in a circuit with the terminals of the magnet t. A battery 25 or other source of electric energy is IIO interposed in said circuit, as illustrated in Fig. 11. It is accordingly evident that at intervals of three minutes the magneti will be energized and then deenergized, attracting and releasing its armature and operating the pin-wheel escapement, which causes a stepby-step progression of the minute type-wheel c at intervals of three minutes and the progression of the hour type-wheel d at intervals of an hour.

The receiving instrument, which records the message on the tape, will preferably be placed close to the time-recorder, so that the tape passes from one instrument into the other. The terminals of the printing-magnet g may be connected with a suitable contact device in the said receiving instrument, so that upon the receipt of a message said magnet will be energized and the platen-block c elevated, so as to imprint the time of the receipt of the message upon the tape.

The operation, briefly stated, is as follows: The contact-wheel s on the back of the clock having twenty teeth and twenty spaces lacking teeth in its circumference and completing one rotation regularly in an hours time, there will be approximately-equal periods of current and no currentthrough the magnet 2', each lasting aminute and a half. The period of current has no appreciable effect on the movement of the minutes type-wheel, since the magnet i in attractingits armature permits only an infinitesimal progression of said type-wheel. As soon as the current breaks the type-wheel moves ahead one step and continues to do so during the three-minute intervals, the hour type-wheel stepping ahead once for every complete rotation of the minute-wheel. During the escape of the pinwheel 7L4 upon each break in the clock-current the fly h' and pallet it act as a retarder to prevent the parts from moving too suddenly. The figures on the type-wheels indicating the time are thus regularly changed; but no imprint is made on the tape T unless an impulse is received through the printingmagnet g. Upon the receipt of such an impulse the said magnet will attract its armature, and the platen 6 will be elevated and will cause to be printed on the tape the figures on the type-wheels which are then opposite the platen. The cessation of the impulse in the printing-magnet causes the platen to descend.

I claim 1. In a device of the character specified, the combination of a type-wheel, a mechanicallydriven clock train adapted to rotate said wheel, an escapement for said train, an electromagnet for operating said escapement, an electrical make-and-break device in circuit with said magnet, and a time mechanism for operating said device.

2. In a device of the character specified, the combination of a type-wheel, a clock-train adapted to rot-ate said wheel, a retarding-escapement included in said clock-train, a second escapement controlling said clock-train, an electromagnet for operating said second escapement, and a time mechanism controlling the circuit of said magnet.

8. In adevice of the character specified, the combination of a type-wheel having a shaft, a second shaft geared to said type-wheel shaft, a motive device for rotating said second shaft, an escape-wheel carried by the second shaft, a detent cooperating with-said escape-wheel, an electromagnet for operating said detent, a second escape-wheel carried by said second shaft, and a pallet device coacting with said second escape-wheel as a retarder, during the action of the magnet-operated escapement.

4. In a device of the character specified, the combination of a type-wheel, a clock-train adapted to rotate said wheel, a wheel rotated by said clock-train and having a circular series of pins, a detent having stops movable into and out of the path of said pins, and sue cessively engaging a pin to liberate the wheel one pin at a time, a retarder in the clock-train adapted to retard its movement during the escape of the pin-wheel, an electromagnet having its armature connected with and adapted to operate said detent, and means for controlling the circuit of said magnet.

5. In a device of the character specified, the combination of a printing device, an electromagnet controlling the same, a pair of contact-posts or terminals for the winding of said magnet, a base carrying said parts, a clock, an electrical make-and-break device mounted on the clock and operated by its mechanism, and contact-posts or terminals for said device mounted on the clock and separably connected with the posts on the base.

6. In a device of the character specified, the combination of a shaft, a type-wheel fixed thereto, a series of projections carried by said shaft and circularly arranged therearound, two ink-ribbon rolls provided with ratchets, a pawl device for rotating said ratchets, a suitably-journaled arm carrying said device, and adapted to be intermittently engaged and os-' cillated by the said projections, and yielding means, adapted to retract said arm.

In testimony whereof I have affixed my signature in presence of two witnesses.

ED'WARD DAVIS.

Witnesses:

P. W. PEZZETTI, A. D. HARRISON. 

